I am building a small track for my son to practice on his 65 and need some help with the berm turns. I laid out a few starters (they are almost all 180 degrees more or less) and they are too tight and the pitch is too steep. I rode out the turns with my 250 and had an 85 rider come out and ride so anyone have any tips on how to build them more effeciently? How much pitch should they have and how long/wide? Or is it simply trial and error?